Improvement in nail-extractors



J. CAPEW ELL.

Nail-Extra'mrs.

Pgtenied om. 7. 187s.

No. MBAQ.

UNITED STATES BURY, CONNECTICUT.

PATE QEEIGE.

GEORGE J. eAPEwELL, 0E oEEsHrEE, AssrGNoE To ELI oUETiss, oE wATEE-Town, Ann noUGLAss E. MALTEY AND LEwIs J. ATwooD, or wATEE-l`uvlPRovEn/IENT IN NAIL-EXTRACTORS.

Specification forming part of Letters Patent No. 143,496, dated October7, 1873; application filed l April 11, 1873.

To all whom t may concern:

Be it known that I, GEORGE J. CArEwELL, of Cheshire, in the coimty ofNew Haven and State of Connecticut, have invented a new and usefulImprovement in Nail-Extractors; and that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawings and to the letters of reference marked thereon,making a partof this specification.

This invention is in the nature of an improvement in nail-extractorsoperated by percussive force; and the invention consists in anail-extractor of such kind, constructedso as to be more simple,durable, and effective than nail-extractors heretofore made.

The invention more particularly relates to nail-extractors constructedsubstantially in accordancewith Letters Patent granted to me on the 16thday of July, 187 2 but in the nailextractor described and shown in saidpatent the whole of the percussive force was received on a plug screwedinto the lower end of a hollow cylindrical stem; and since, in thecourse of time and with continued ramming,7 this plug might becomedetached and the instrument rendered useless, the object of this presentinvention is to obviate any liability to such an accident, and also toso ax the spring by which the movable jaw is actuated in such positionthat its accidental disarrangement is rendered impossible. The springfor like purposes in my said Letters Patent having been exposed, it waspeculiarly liable to accident; and my present invention is in respect tothis spring an improvement upon the nail-extractor described in saidLetters Patent.

In the accompanying sheet of drawings, Figure l represents a sideelevation of my nailextractor, partly in section; Fig. 2, a sideelevation of iixed jaw; Fig. 3, a side elevation of movable jaw withfulcrum; Figs. 4 and 5, detailed views of spring 5 and Fig. 6, an edge lView of extractor, showing the position of the parts in the severalfigures.

A represents the rammer proper of my extractor, the ball B andupperprojection C of which are of solid metal. The lower projection D is ahollow cylinder or of tubular construction. E is a solid cylindricalstem made from steel orother similar material, and of a diameter thatwill admit of its freely entering into the cylindrical projection l).The

lower end of the stem E has formed upon it a fixed claw, c, and haspivoted to it, by a pivotal bolt, b, a movable jaw, c, one side of saidjaw being curved and extended and forming a fulcrum, d. Between thesetwo jaws, and around the pivotal bolt b, is placed a circular spring, f,made from spring-wire. This spring iits into recesses g and g formed inthe inner faces of each of said claws, and is held in position betweensaid claws by bending the ends of said spring in opposite directions, asshown in Fig. 5, the bent ends forming projections, which are receivedinto small recesses 7L h formed in said claws for that purpose, theobject of this spring being to restore the movable claw to its normal oropen position after tlie extractor has been used. p

My nail extractor being constructed substantially as above described,its operation is as follows: The claws are placed immediately over anail-head, so that the nail-head will come between said claws. Therammer A is then raised to its full extent, which extent is regulated bya check strap, F, one end of which is secured to the stem E, and theother to the tube D, and the rammer is then brought down with a quickramming motion, bringing the upper end of the stem E in contact with thesolid ball B, this motion forcing the claws slightly into the woodsurrounding the nailhead, so that when the extractor is bent over in thedirection of the fulcrum d the claws will grasp the nail, and enable itto be extracted in precisely the same manner as is described in my saidLetters Patent of July 16, 1872.

It will be seen from the foregoing that the spring f actuating themovable jaw is entirely concealed, and out of the way of accidentaldisplacement, and that no amount of ramming can disarrange `any part ofthe stem E or its jaws.

I hereby disclaim the reissued Letters Patfaces of which are recessed toreceive a circuent granted GEO. J. OAPEWELL for improved lar spring forholding the jaws apart, in oomnail-extraetor, bearing` date, originally,the bination With a tubular Weighted ralnlner selth day of July, 1872,and numbered 129,210. cured to the stem, substantially as described.

Having thus described my invention, What GEORGE J. GAPEWELL. I claim asnew, and desire to secure by Letters Patent, is- Witnesses:

A nail-extractor having its stem provided H. L. WATTENBERG,

with a stationary and movable jaw, the inner G. M. PLYMPTON.

